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Whats the proper blueprint node for calling a dynamic parameter module in a particle system?

I'm trying to use a dynamic parameter module in cascade. It's set up in the material to control opacity, but I'm having trouble finding the right node to call the parameter's name and change its value. Set vector parameter, material parameter, and float parameter don't seem do be doing the trick.

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asked Aug 10 '14 at 10:41 PM in Blueprint Scripting

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Hey swiss_cheese9797 -

A Dynamic parameter connects a Material to a Particle System is supposed to be controlled in Cascade, but you can then choose a Parameter data type in Cascade and pull that newly named variable in the Blueprints. So looking at my image below, I have a dynamic parameter called Gradient_Control which is created in my Material. If I choose to add a Float Parameter as the Cascade data option I will get the option to name another variable here to then call a Float parameter in Blueprints of that new Variable name.

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Thank You

Eric Ketchum

dynamicsetup.jpg (86.0 kB)
dynamicsetup01.jpg (59.6 kB)
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answered Aug 11 '14 at 09:12 PM

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Lovecraft_K ♦♦ STAFF
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avatar image swiss_cheese9797 Aug 11 '14 at 11:26 PM

Hey that worked! But only after I disconnected a get named parameter and just copied and pasted the parameter name right into the field. Why would this even make a difference? Thanks for taking time out to answer my question with visuals even :)

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avatar image Lovecraft_K ♦♦ STAFF Aug 12 '14 at 01:08 PM

Well I tend to type in the parameter name because it keeps my blueprints cleaner (less nodes hanging around). From the image you are showing though it looks like you may have put a space between Dust and Lit in the node and not in the typed in parameter which would be a different variable according to Blueprints and Cascade.

Eric Ketchum

avatar image swiss_cheese9797 Aug 12 '14 at 11:25 PM

Awesome, got it. Thanks again man!

avatar image Shempii Mar 28 '17 at 02:25 PM


How can I set points on a Distribution Float Constant Curve in this way? SetFloatParameter doesn't seem to offer anything like that. I want to essentially parameterize the points on a ColorOverLife curve but it's proving a lot more difficult than it seemingly should be.

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